Chop the onion finely, season with salt and pepper and stir-fry until caramelized.,Cut the vegetables up into bite-sized pieces.,Add the cooked onion and the ingredients in a bowl and mix well until sticky.,______,When both sides are browned, put a lid on and steam-fry over low heat.,Put the sauce ingredients (sake, ketchup, Worcestershire-style sauce, mustard, sugar) in a pan and simmer over medium heat until it has thickened slightly.,In the meantime, cook the fried eggs to top the dishes.,Arrange on a place and you're done.,Bon appetit!